This half size card provides 2 industry standard 9 pin RS232 serial COM ports in a single PCI slot. By adding the optional LPT adapter cable, a parallel printer port becomes available. As PCI is fully Plug & Play compatible the operating system or Bios automatically configures card ensuring conflict free installation. Serial Solutions Device Driver CD contains software for Windows 7, Server 2008, Vista, Server 2003, XP, 2000, Millennium, 98, 95, NT4, Windows 3.x, DOS and OS/2. Informative manuals and sample programs are supplied with full source code on CD!